Manchester United centre-back Rio Ferdinand believes teammate Marouane Fellaini was unfairly dismissed in the Red Devils' goalless draw against Real Sociedad on Tuesday.
Fellaini was sent off in added time after he picked up his second yellow card of the match.
However Ferdinand believes the £27.5million signing from Everton was 'unfortunate' to be shown a red card by Italian referee Nicola Rizzoli.
Manchester United, who missed several opportunities to take the lead - including a second-half penalty, hung onto claim a point at the Anoeta Stadium.
Speaking to MUTV, Ferdinand said: “Felli won a lot of balls in midfield and was maybe a little bit unfortunate with the sending off.
"I think he only made three or four tackles in the whole game but that is what happens in Europe sometimes.
“I thought we defended well as a team, we pressed them in the middle of the park and got up against them."
Manchester United remain top of Group A but are just a point ahead of German side Bayer Leverkusen and three points ahead of Shakhtar Donetsk.
David Moyes' side, who will be without Fellaini for their next Champions League clash following his dismissal, have to travel to Germany to face Bayer Leverkusen at the end of November before hosting Shakhtar Donetsk in the their final group game.